e*thirteen Grappler RS – 27.5 × 2.4, Flux GR Radial Casing (MoPo)

The Grappler RS Radial takes the proven rear‑specific RS tread and pairs it with e*thirteen’s advanced Flux GR Radial casing. Taller center knobs and steeper ramp angles deliver strong braking bite, fast rolling, and confident rear‑wheel hookup under acceleration. Proportionally taller shoulder knobs ensure a smooth, predictable lean transition on loose or technical terrain.

The Flux GR Radial casing introduces radial‑ply construction, allowing the tread and sidewall to flex independently. This improves straight‑line tracking under braking, enhances conformity to rough terrain, and reduces rider fatigue over long Enduro or E‑MTB stages. A 72 TPI dual‑ply layout with Dual Apex inserts keeps the tire stable under hard cornering loads without compromising the radial compliance.

This version uses the MoPo compound — a pure 42a single compound designed for maximum grip. Its ultra‑soft durometer and slow rebound deliver the highest possible rear‑wheel traction under braking and through corners. When every bit of grip counts, MoPo is the choice.

Pair it with a Grappler Radial front tire for the most connected, compliant setup on long, rough terrain.

Key Features

• Rear‑specific tread with taller center knobs and steeper ramp angles


• Radial‑ply construction for improved braking stability and bump absorption


• Flux GR Radial casing: 72 TPI dual‑ply with Dual Apex inserts


• MoPo compound: pure 42a single compound for maximum grip


• 27.5" × 2.4"


• Tubeless ready

Specifications

• Size: 27.5" × 2.4"


• Casing: Flux GR Radial – 2‑ply 72 TPI with Dual Apex inserts & Armor Weave sidewall


• Compound: MoPo (42a single compound)


• Compatibility: Tubeless ready


• Weight: 1460 g ±

A maximum‑traction rear tire built for riders who demand the highest braking grip, terrain compliance, and control on the roughest Enduro, DH, and E‑MTB terrain.